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-rw-r--r--fw/include/usbh_core.h65
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diff --git a/fw/include/usbh_core.h b/fw/include/usbh_core.h
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+/*
+ * This file is part of the libusbhost library
+ * hosted at http://github.com/libusbhost/libusbhost
+ *
+ * Copyright (C) 2015 Amir Hammad <amir.hammad@hotmail.com>
+ *
+ *
+ * libusbhost is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef USBH_CORE_
+#define USBH_CORE_
+
+#include "usbh_config.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+
+/* This must be placed around external function declaration for C++
+ * support. */
+#ifdef __cplusplus
+# define BEGIN_DECLS extern "C" {
+# define END_DECLS }
+#else
+# define BEGIN_DECLS
+# define END_DECLS
+#endif
+
+BEGIN_DECLS
+
+typedef struct _usbh_dev_driver usbh_dev_driver_t;
+typedef struct _usbh_low_level_driver usbh_low_level_driver_t;
+
+/**
+ * @brief usbh_init
+ * @param low_level_drivers list of the low level drivers to be used by this library
+ * @param device_drivers list of the device drivers that could be used with attached devices
+ */
+void usbh_init(const usbh_low_level_driver_t * const low_level_drivers[], const usbh_dev_driver_t * const device_drivers[]);
+
+/**
+ * @brief usbh_poll
+ * @param time_curr_us - use monotically rising time
+ *
+ * time_curr_us:
+ * * can overflow, in time of this writing, after 1s
+ * * unit is microseconds
+ */
+void usbh_poll(uint32_t time_curr_us);
+
+END_DECLS
+
+#endif // USBH_CORE_